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mcma1

Member Since: 16 Oct 2012
Location: Northern Ireland
Posts: 2946

Non factory Alpine SW1200 question.

I have a non factory alpine Sw1200 I want to hook but going under my second row cubby. The setup diagram suggests I can do this and just tap into the rear speakers? It would be handy to keep all the amp wiring in the rear under the rear seat box. I assume is will then work with any head unit if i swap it later?
Cheers Andy

2014 Fuji 110 SW LS3
https://www.defender2.net/forum/post751233.html#751233

2014 Corris 110 SW
http://www.defender2.net/forum/topic40056.html

My old Xtech 90 build..
http://www.defender2.net/forum/topic15681.html

LS3 V8 build...
http://www.defender2.net/forum/topic49051.html

27th Jan 2021 10:51pm

ay4alex

Member Since: 18 Feb 2009
Location: Midlands
Posts: 328

2008 Defender 110 Puma 2.4 XS DCPU Java Black

Hi Andy,
Yes, believe your suggestion would be to use the high level inputs which essentially isolate and then amplify the bass frequencies being sent to the rear speakers, rather than running RCA cables for low level (but better isolated) frequencies from the headunit.

I've never used high level inputs, but believe that as long as the rear speakers are being driven, it wouldn't matter which head unit you change to in the future.
I suspect, however, that any affecting changes to the bass frequency or fader to the rear speakers would also directly affect the subwoofer?

So in short, I believe the answer to your question is yes, you can. The more subjective question would be, what control you'd loose over a specific bass channel output direct to the sub from the headunit.

A loose overview of the difference as here : https://learn.sonicelectronix.com/high-lev...el-inputs/

(this doesn't clarify whether your subwoofer would be affected by changes to the rear speaker channels at a tonal level)

Hope that helps?!

Alex 110 Tdci Double Cab

28th Jan 2021 5:18pm

ay4alex

Member Since: 18 Feb 2009
Location: Midlands
Posts: 328

I've just taken a look at the install manual and it does outline that Subwoofer output will be affected by the fader settings of the head unit.

So if you faded towards the front speakers, then your sub output will drop as the signal is weaker to the rear speakers - whether that's a directly linear drop between the speakers and the sub, I'm afraid I don't know!

Thanks
A 110 Tdci Double Cab

28th Jan 2021 5:23pm

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